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Finding the Third Proportional to 18,420.75 and 26,280.28

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Solution

The third proportional to 18,420.75 and 26,280.28 is: 37,493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.75 : 26,280.28 = 26,280.28 : x
  2. Step 2: Convert to fraction form
    18,420.75/26,280.28 = 26,280.28/x
  3. Step 3: Cross multiply
    18,420.75x = 26,280.28 × 26,280.28
  4. Step 4: Simplify right side
    18,420.75x = 690,653,182.58
  5. Step 5: Solve for x
    x = 690,653,182.58/18,420.75
  6. Step 6: Final answer
    x = 37,493.22

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.